| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
heroin her·o·in (hěr'ō-ĭn)
n.
A white, bitter, crystalline compound that is derived from morphine and is a highly addictive narcotic. Also called diacetylmorphine.
| heroin (hěr'ō-ĭn) Pronunciation Key
A white, odorless, bitter crystalline compound, C17H17NO(C2H3O2)2, that is derived from morphine and is a highly addictive narcotic. |